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RC resets itself when robot tries to move
This problem popped up after we returned from the Seattle regionals.
Anytime the joystick is moved to move the drive motors, the robot controller will reset itself, often before the wheels even start turning, so I'm quite certain it's not some sort of jarring issue. Strangely enough, moving the motor for the arm does not present the same problem. I've tested and swapped breakers, and those seem to be in working order. Pretty much stumped on this; any help would be greatly appreciated. |
The first thing I'd check is that the batteries you're using are properly charged. If the voltage supplied drops below +9VDC, approximately, the RC will reset.
Hmm. Other than this, I'm not sure what to think. |
Dude, your battery is dead. We had the same thing happen. The drive motors draw much more than the arm motor and will cause a big voltage drop which causes the RC to reset. Leave the battery on an automatic charger overnight or use a manual charger and watch the gauge.:)
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If your battery is good and charged...
Turn off all power. tip the robot on it's side and try and move the wheels by hand. A trashed gear box can give you the same type of response (the controller can reset before the CB trips). |
Assuming you have tried everything mentioned above and still have a problem. I would think about the joystick - it may have a short or a loose connection. Try another joystick. Inspect the port on the OI.
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like everyone else has pretty much said, charge the battery, check the joystick to see if theres a short. And check to make sure the oi pins on the comp port or any port are not damaged, you could have a short also somewheres in your bot thats causing a chrge to build up and create an impulse to the comp port. Also take a voltmeter and make sure you are getting flow to the motor, then you will definitly know if it is an electrical or mechanical problem... Other then that blame the programmer (j/k).
~Mike P.S.~ the prgramming joke is that if its not mechanical then its got to be programmings issue... |
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MOVE THE RADIO!!!
That was our HUGE problem this year!! We found out where we mounted the radio on the robot caused a huge RF interference problem which led to us doing the same exact thing at NYC this year!! Move the radio!! If that doesn't work.... rebuild the robot!! lol |
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~Mike |
It sounds like you may have a short somewhere after a speed controller. As mentioned earlier, it might be posible that a short in the leads between a motor and a speed controller could draw enough current to drop the system voltage beyond the RC reset point before a breaker has time to trip. What happens if you only push the stick forward slightly? Check the resistance between the motor terminals and the M+ and M- terminals of the speed controlers to the V+ and V- terminals. What are they?
[EDITED TO CORRECT MY DUMBNESS.] |
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~Mike |
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